Firewall Wizards mailing list archives
Re: stopping bots from phoning home
From: Kevin <kkadow () gmail com>
Date: Wed, 7 Sep 2005 23:43:56 -0500
On 9/7/05, mason () schmitt ca <mason () schmitt ca> wrote:
We take this a step further -- let all traffic that hits the blocks talk to a "sandbox" minimal IRCd, and if the traffic looks like bot chatter, quarantine the source host.Do you use bopm or something like that on your sandbox ircd?
We just run a very basic IRCd, modified to generate a log event for each PRIVMSG, JOIN, NICK and other similar command issued by any client. We can also look at the original destination IP they addressed, and check this against a list of known C&C channels. My customer base is very sensitive about even giving the impression of "port scanning", so we have to learn as much as we can from the sessions they initiate towards our infrastructure.
I'm not sure that an explicit proxy solution will fly in a public ISP, customers just are not going to be comfortable with having to jump through hoops when they're used to just being able to click on the "live chat" button on their brokerage or Invader Zim webboard and go right into a conversation. Most of the time the user doesn't even know they are using IRC!I'm somewhat sceptical that some "live chat" buttons actually invoke IRC. Or Invader Zim webboard for that matter ;) Are you sure? Can you give me a real example?
The first "real" user who complained had clicked through from JDate, and suddenly found himself chatting with 37 instances of SDBot... As for Invader Zim, see http://www.badbadrubberpiggy.com/chat.php/ Kevin Kadow _______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- Re: stopping bots from phoning home Paul D. Robertson (Sep 01)
- Re: stopping bots from phoning home mason (Sep 07)
- Re: stopping bots from phoning home Paul D. Robertson (Sep 08)
- <Possible follow-ups>
- Re: stopping bots from phoning home mason (Sep 08)
- Re: stopping bots from phoning home Kevin (Sep 08)
- Re: The home user problem returns Mason Schmitt (Sep 08)
- Re: The home user problem returns Marcus J. Ranum (Sep 12)
- Re: The home user problem returns Mason Schmitt (Sep 12)
- Re: The home user problem returns Chris Blask (Sep 13)
- Re: The home user problem returns Mason Schmitt (Sep 13)
- Re: The home user problem returns Marcus J. Ranum (Sep 13)
- Re: The home user problem returns Chris Blask (Sep 13)
- Re: The home user problem returns Mason Schmitt (Sep 13)
- Re: The home user problem returns Jim Seymour (Sep 13)
- Re: The home user problem returns George Capehart (Sep 14)
- Re: stopping bots from phoning home Kevin (Sep 08)
- Re: stopping bots from phoning home mason (Sep 07)